package com.sky.mapper;

import com.sky.entity.ShoppingCart;
import org.apache.ibatis.annotations.*;

import java.util.List;

@Mapper
public interface ShoppingCartMapper {
    /**
     * 动态查询购物车
     * @param shoppingCart
     * @return
     */
    ShoppingCart getShoppingCart(ShoppingCart shoppingCart);

    /**
     * 修改购物车对于商品的数量
     * @param cart
     */
    @Update("update shopping_cart set number = #{number} where id = #{id}")
    void updateNumberById(ShoppingCart cart);

    /**
     * 添加购物车
     * @param shoppingCart
     */
    @Insert("insert into shopping_cart (name, image, user_id, dish_id, setmeal_id, dish_flavor, amount, create_time) " +
            "VALUES (#{name},#{image},#{userId},#{dishId},#{setmealId},#{dishFlavor},#{amount},#{createTime}) ")
    void insert(ShoppingCart shoppingCart);

    /**
     * 根据用户id查询所有购物车
     * @param userId
     * @return
     */
    @Select("select * from shopping_cart where user_id = #{userId}")
    List<ShoppingCart> list(Long userId);

    /**
     * 根据用户id清空购物车
     * @param userId
     */
    @Delete("delete from shopping_cart where user_id = #{userId}")
    void deleteByUserId(Long userId);

    /**
     * 动态删除指定的购物车商品
     * @param shoppingCart
     */
    void deleteForOne(ShoppingCart shoppingCart);

    /**
     * 将商品批量插入购物车中
     * @param shoppingCarts
     */
    void insertBatch(List<ShoppingCart> shoppingCarts);
}
